diff options
Diffstat (limited to 'drivers/scsi/cxgbi/libcxgbi.h')
| -rw-r--r-- | drivers/scsi/cxgbi/libcxgbi.h | 753 |
1 files changed, 753 insertions, 0 deletions
diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h new file mode 100644 index 000000000000..40551f3be5dc --- /dev/null +++ b/drivers/scsi/cxgbi/libcxgbi.h @@ -0,0 +1,753 @@ +/* + * libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver. + * + * Copyright (c) 2010 Chelsio Communications, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + * + * Written by: Karen Xie (kxie@chelsio.com) + * Written by: Rakesh Ranjan (rranjan@chelsio.com) + */ + +#ifndef __LIBCXGBI_H__ +#define __LIBCXGBI_H__ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/debugfs.h> +#include <linux/list.h> +#include <linux/netdevice.h> +#include <linux/if_vlan.h> +#include <linux/scatterlist.h> +#include <linux/skbuff.h> +#include <linux/vmalloc.h> +#include <scsi/scsi_device.h> +#include <scsi/libiscsi_tcp.h> + +enum cxgbi_dbg_flag { + CXGBI_DBG_ISCSI, + CXGBI_DBG_DDP, + CXGBI_DBG_TOE, + CXGBI_DBG_SOCK, + + CXGBI_DBG_PDU_TX, + CXGBI_DBG_PDU_RX, + CXGBI_DBG_DEV, +}; + +#define log_debug(level, fmt, ...) \ + do { \ + if (dbg_level & (level)) \ + pr_info(fmt, ##__VA_ARGS__); \ + } while (0) + +/* max. connections per adapter */ +#define CXGBI_MAX_CONN 16384 + +/* always allocate rooms for AHS */ +#define SKB_TX_ISCSI_PDU_HEADER_MAX \ + (sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE) + +#define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/ + +/* + * align pdu size to multiple of 512 for better performance + */ +#define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0) + +#define ULP2_MODE_ISCSI 2 + +#define ULP2_MAX_PKT_SIZE 16224 +#define ULP2_MAX_PDU_PAYLOAD \ + (ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN) + +/* + * For iscsi connections HW may inserts digest bytes into the pdu. Those digest + * bytes are not sent by the host but are part of the TCP payload and therefore + * consume TCP sequence space. + */ +static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 }; +static inline unsigned int cxgbi_ulp_extra_len(int submode) +{ + return ulp2_extra_len[submode & 3]; +} + +/* + * struct pagepod_hdr, pagepod - pagepod format + */ + +#define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */ +#define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */ +#define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */ +#define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */ + +struct cxgbi_pagepod_hdr { + u32 vld_tid; + u32 pgsz_tag_clr; + u32 max_offset; + u32 page_offset; + u64 rsvd; +}; + +#define PPOD_PAGES_MAX 4 +struct cxgbi_pagepod { + struct cxgbi_pagepod_hdr hdr; + u64 addr[PPOD_PAGES_MAX + 1]; +}; + +struct cxgbi_tag_format { + unsigned char sw_bits; + unsigned char rsvd_bits; + unsigned char rsvd_shift; + unsigned char filler[1]; + u32 rsvd_mask; +}; + +struct cxgbi_gather_list { + unsigned int tag; + unsigned int length; + unsigned int offset; + unsigned int nelem; + struct page **pages; + dma_addr_t phys_addr[0]; +}; + +struct cxgbi_ddp_info { + struct kref refcnt; + struct cxgbi_device *cdev; + struct pci_dev *pdev; + unsigned int max_txsz; + unsigned int max_rxsz; + unsigned int llimit; + unsigned int ulimit; + unsigned int nppods; + unsigned int idx_last; + unsigned char idx_bits; + unsigned char filler[3]; + unsigned int idx_mask; + unsigned int rsvd_tag_mask; + spinlock_t map_lock; + struct cxgbi_gather_list **gl_map; + struct sk_buff **gl_skb; +}; + +#define DDP_PGIDX_MAX 4 +#define DDP_THRESHOLD 2048 + +#define PPOD_PAGES_SHIFT 2 /* 4 pages per pod */ + +#define PPOD_SIZE sizeof(struct cxgbi_pagepod) /* 64 */ +#define PPOD_SIZE_SHIFT 6 + +#define ULPMEM_DSGL_MAX_NPPODS 16 /* 1024/PPOD_SIZE */ +#define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */ +#define PCIE_MEMWIN_MAX_NPPODS 16 /* 1024/PPOD_SIZE */ + +#define PPOD_COLOR_SHIFT 0 +#define PPOD_COLOR(x) ((x) << PPOD_COLOR_SHIFT) + +#define PPOD_IDX_SHIFT 6 +#define PPOD_IDX_MAX_SIZE 24 + +#define PPOD_TID_SHIFT 0 +#define PPOD_TID(x) ((x) << PPOD_TID_SHIFT) + +#define PPOD_TAG_SHIFT 6 +#define PPOD_TAG(x) ((x) << PPOD_TAG_SHIFT) + +#define PPOD_VALID_SHIFT 24 +#define PPOD_VALID(x) ((x) << PPOD_VALID_SHIFT) +#define PPOD_VALID_FLAG PPOD_VALID(1U) + +#define W_TCB_ULP_TYPE 0 +#define TCB_ULP_TYPE_SHIFT 0 +#define TCB_ULP_TYPE_MASK 0xfULL +#define TCB_ULP_TYPE(x) ((x) << TCB_ULP_TYPE_SHIFT) + +#define W_TCB_ULP_RAW 0 +#define TCB_ULP_RAW_SHIFT 4 +#define TCB_ULP_RAW_MASK 0xffULL +#define TCB_ULP_RAW(x) ((x) << TCB_ULP_RAW_SHIFT) + +/* + * sge_opaque_hdr - + * Opaque version of structure the SGE stores at skb->head of TX_DATA packets + * and for which we must reserve space. + */ +struct sge_opaque_hdr { + void *dev; + dma_addr_t addr[MAX_SKB_FRAGS + 1]; +}; + +struct cxgbi_sock { + struct cxgbi_device *cdev; + + int tid; + int atid; + unsigned long flags; + unsigned int mtu; + unsigned short rss_qid; + unsigned short txq_idx; + unsigned short advmss; + unsigned int tx_chan; + unsigned int rx_chan; + unsigned int mss_idx; + unsigned int smac_idx; + unsigned char port_id; + int wr_max_cred; + int wr_cred; + int wr_una_cred; + unsigned char hcrc_len; + unsigned char dcrc_len; + + void *l2t; + struct sk_buff *wr_pending_head; + struct sk_buff *wr_pending_tail; + struct sk_buff *cpl_close; + struct sk_buff *cpl_abort_req; + struct sk_buff *cpl_abort_rpl; + struct sk_buff *skb_ulp_lhdr; + spinlock_t lock; + struct kref refcnt; + unsigned int state; + struct sockaddr_in saddr; + struct sockaddr_in daddr; + struct dst_entry *dst; + struct sk_buff_head receive_queue; + struct sk_buff_head write_queue; + struct timer_list retry_timer; + int err; + rwlock_t callback_lock; + void *user_data; + + u32 rcv_nxt; + u32 copied_seq; + u32 rcv_wup; + u32 snd_nxt; + u32 snd_una; + u32 write_seq; +}; + +/* + * connection states + */ +enum cxgbi_sock_states{ + CTP_CLOSED, + CTP_CONNECTING, + CTP_ACTIVE_OPEN, + CTP_ESTABLISHED, + CTP_ACTIVE_CLOSE, + CTP_PASSIVE_CLOSE, + CTP_CLOSE_WAIT_1, + CTP_CLOSE_WAIT_2, + CTP_ABORTING, +}; + +/* + * Connection flags -- many to track some close related events. + */ +enum cxgbi_sock_flags { + CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */ + CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */ + CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */ + CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */ + CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */ + CTPF_HAS_ATID, /* reserved atid */ + CTPF_HAS_TID, /* reserved hw tid */ + CTPF_OFFLOAD_DOWN, /* offload function off */ +}; + +struct cxgbi_skb_rx_cb { + __u32 ddigest; + __u32 pdulen; +}; + +struct cxgbi_skb_tx_cb { + void *l2t; + struct sk_buff *wr_next; +}; + +enum cxgbi_skcb_flags { + SKCBF_TX_NEED_HDR, /* packet needs a header */ + SKCBF_RX_COALESCED, /* received whole pdu */ + SKCBF_RX_HDR, /* recieved pdu header */ + SKCBF_RX_DATA, /* recieved pdu payload */ + SKCBF_RX_STATUS, /* recieved ddp status */ + SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */ + SKCBF_RX_HCRC_ERR, /* header digest error */ + SKCBF_RX_DCRC_ERR, /* data digest error */ + SKCBF_RX_PAD_ERR, /* padding byte error */ +}; + +struct cxgbi_skb_cb { + unsigned char ulp_mode; + unsigned long flags; + unsigned int seq; + union { + struct cxgbi_skb_rx_cb rx; + struct cxgbi_skb_tx_cb tx; + }; +}; + +#define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0])) +#define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags) +#define cxgbi_skcb_ulp_mode(skb) (CXGBI_SKB_CB(skb)->ulp_mode) +#define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq) +#define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest) +#define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen) +#define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next) + +static inline void cxgbi_skcb_set_flag(struct sk_buff *skb, + enum cxgbi_skcb_flags flag) +{ + __set_bit(flag, &(cxgbi_skcb_flags(skb))); +} + +static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb, + enum cxgbi_skcb_flags flag) +{ + __clear_bit(flag, &(cxgbi_skcb_flags(skb))); +} + +static inline int cxgbi_skcb_test_flag(struct sk_buff *skb, + enum cxgbi_skcb_flags flag) +{ + return test_bit(flag, &(cxgbi_skcb_flags(skb))); +} + +static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk, + enum cxgbi_sock_flags flag) +{ + __set_bit(flag, &csk->flags); + log_debug(1 << CXGBI_DBG_SOCK, + "csk 0x%p,%u,0x%lx, bit %d.\n", + csk, csk->state, csk->flags, flag); +} + +static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk, + enum cxgbi_sock_flags flag) +{ + __clear_bit(flag, &csk->flags); + log_debug(1 << CXGBI_DBG_SOCK, + "csk 0x%p,%u,0x%lx, bit %d.\n", + csk, csk->state, csk->flags, flag); +} + +static inline int cxgbi_sock_flag(struct cxgbi_sock *csk, + enum cxgbi_sock_flags flag) +{ + if (csk == NULL) + return 0; + return test_bit(flag, &csk->flags); +} + +static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state) +{ + log_debug(1 << CXGBI_DBG_SOCK, + "csk 0x%p,%u,0x%lx, state -> %u.\n", + csk, csk->state, csk->flags, state); + csk->state = state; +} + +static inline void cxgbi_sock_free(struct kref *kref) +{ + struct cxgbi_sock *csk = container_of(kref, + struct cxgbi_sock, + refcnt); + if (csk) { + log_debug(1 << CXGBI_DBG_SOCK, + "free csk 0x%p, state %u, flags 0x%lx\n", + csk, csk->state, csk->flags); + kfree(csk); + } +} + +static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk) +{ + log_debug(1 << CXGBI_DBG_SOCK, + "%s, put csk 0x%p, ref %u-1.\n", + fn, csk, atomic_read(&csk->refcnt.refcount)); + kref_put(&csk->refcnt, cxgbi_sock_free); +} +#define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk) + +static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk) +{ + log_debug(1 << CXGBI_DBG_SOCK, + "%s, get csk 0x%p, ref %u+1.\n", + fn, csk, atomic_read(&csk->refcnt.refcount)); + kref_get(&csk->refcnt); +} +#define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk) + +static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk) +{ + return csk->state >= CTP_ACTIVE_CLOSE; +} + +static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk) +{ + return csk->state == CTP_ESTABLISHED; +} + +static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk) +{ + struct sk_buff *skb; + + while ((skb = __skb_dequeue(&csk->write_queue))) + __kfree_skb(skb); +} + +static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win) +{ + unsigned int wscale = 0; + + while (wscale < 14 && (65535 << wscale) < win) + wscale++; + return wscale; +} + +static inline struct sk_buff *alloc_cpl(int cpl_len, int dlen, gfp_t gfp) +{ + int wrlen = roundup(cpl_len, 16); + struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp); + + if (skb) { + __skb_put(skb, wrlen); + memset(skb->head, 0, wrlen + dlen); + } else + pr_info("alloc cpl skb %u+%u, OOM.\n", cpl_len, dlen); + return skb; +} + + +/* + * The number of WRs needed for an skb depends on the number of fragments + * in the skb and whether it has any payload in its main body. This maps the + * length of the gather list represented by an skb into the # of necessary WRs. + * The extra two fragments are for iscsi bhs and payload padding. + */ +#define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2) + +static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk) +{ + csk->wr_pending_head = csk->wr_pending_tail = NULL; +} + +static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk, + struct sk_buff *skb) +{ + cxgbi_skcb_tx_wr_next(skb) = NULL; + /* + * We want to take an extra reference since both us and the driver + * need to free the packet before it's really freed. We know there's + * just one user currently so we use atomic_set rather than skb_get + * to avoid the atomic op. + */ + atomic_set(&skb->users, 2); + + if (!csk->wr_pending_head) + csk->wr_pending_head = skb; + else + cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb; + csk->wr_pending_tail = skb; +} + +static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk) +{ + int n = 0; + const struct sk_buff *skb = csk->wr_pending_head; + + while (skb) { + n += skb->csum; + skb = cxgbi_skcb_tx_wr_next(skb); + } + return n; +} + +static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk) +{ + return csk->wr_pending_head; +} + +static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk) +{ + struct sk_buff *skb = csk->wr_pending_head; + + if (likely(skb)) { + csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb); + cxgbi_skcb_tx_wr_next(skb) = NULL; + } + return skb; +} + +void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *); +void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *); +void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *); +void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int); +void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *); +void cxgbi_sock_closed(struct cxgbi_sock *); +void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int); +void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *); +void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *); +void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32); +void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int, + int); +unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int); +void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *); + +struct cxgbi_hba { + struct net_device *ndev; + struct Scsi_Host *shost; + struct cxgbi_device *cdev; + __be32 ipv4addr; + unsigned char port_id; +}; + +struct cxgbi_ports_map { + unsigned int max_connect; + unsigned int used; + unsigned short sport_base; + spinlock_t lock; + unsigned int next; + struct cxgbi_sock **port_csk; +}; + +#define CXGBI_FLAG_DEV_T3 0x1 +#define CXGBI_FLAG_DEV_T4 0x2 +#define CXGBI_FLAG_ADAPTER_RESET 0x4 +#define CXGBI_FLAG_IPV4_SET 0x10 +struct cxgbi_device { + struct list_head list_head; + unsigned int flags; + struct net_device **ports; + void *lldev; + struct cxgbi_hba **hbas; + const unsigned short *mtus; + unsigned char nmtus; + unsigned char nports; + struct pci_dev *pdev; + struct dentry *debugfs_root; + struct iscsi_transport *itp; + + unsigned int pfvf; + unsigned int snd_win; + unsigned int rcv_win; + unsigned int rx_credit_thres; + unsigned int skb_tx_rsvd; + unsigned int skb_rx_extra; /* for msg coalesced mode */ + unsigned int tx_max_size; + unsigned int rx_max_size; + struct cxgbi_ports_map pmap; + struct cxgbi_tag_format tag_format; + struct cxgbi_ddp_info *ddp; + + void (*dev_ddp_cleanup)(struct cxgbi_device *); + void (*csk_ddp_free_gl_skb)(struct cxgbi_ddp_info *, int, int); + int (*csk_ddp_alloc_gl_skb)(struct cxgbi_ddp_info *, int, int, gfp_t); + int (*csk_ddp_set)(struct cxgbi_sock *, struct cxgbi_pagepod_hdr *, + unsigned int, unsigned int, + struct cxgbi_gather_list *); + void (*csk_ddp_clear)(struct cxgbi_hba *, + unsigned int, unsigned int, unsigned int); + int (*csk_ddp_setup_digest)(struct cxgbi_sock *, + unsigned int, int, int, int); + int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *, + unsigned int, int, bool); + + void (*csk_release_offload_resources)(struct cxgbi_sock *); + int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *); + u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32); + int (*csk_push_tx_frames)(struct cxgbi_sock *, int); + void (*csk_send_abort_req)(struct cxgbi_sock *); + void (*csk_send_close_req)(struct cxgbi_sock *); + int (*csk_alloc_cpls)(struct cxgbi_sock *); + int (*csk_init_act_open)(struct cxgbi_sock *); + + void *dd_data; +}; +#define cxgbi_cdev_priv(cdev) ((cdev)->dd_data) + +struct cxgbi_conn { + struct cxgbi_endpoint *cep; + struct iscsi_conn *iconn; + struct cxgbi_hba *chba; + u32 task_idx_bits; +}; + +struct cxgbi_endpoint { + struct cxgbi_conn *cconn; + struct cxgbi_hba *chba; + struct cxgbi_sock *csk; +}; + +#define MAX_PDU_FRAGS ((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512) +struct cxgbi_task_data { + unsigned short nr_frags; + skb_frag_t frags[MAX_PDU_FRAGS]; + struct sk_buff *skb; + unsigned int offset; + unsigned int count; + unsigned int sgoffset; +}; + +static inline int cxgbi_is_ddp_tag(struct cxgbi_tag_format *tformat, u32 tag) +{ + return !(tag & (1 << (tformat->rsvd_bits + tformat->rsvd_shift - 1))); +} + +static inline int cxgbi_sw_tag_usable(struct cxgbi_tag_format *tformat, + u32 sw_tag) +{ + sw_tag >>= (32 - tformat->rsvd_bits); + return !sw_tag; +} + +static inline u32 cxgbi_set_non_ddp_tag(struct cxgbi_tag_format *tformat, + u32 sw_tag) +{ + unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1; + u32 mask = (1 << shift) - 1; + + if (sw_tag && (sw_tag & ~mask)) { + u32 v1 = sw_tag & ((1 << shift) - 1); + u32 v2 = (sw_tag >> (shift - 1)) << shift; + + return v2 | v1 | 1 << shift; + } + + return sw_tag | 1 << shift; +} + +static inline u32 cxgbi_ddp_tag_base(struct cxgbi_tag_format *tformat, + u32 sw_tag) +{ + u32 mask = (1 << tformat->rsvd_shift) - 1; + + if (sw_tag && (sw_tag & ~mask)) { + u32 v1 = sw_tag & mask; + u32 v2 = sw_tag >> tformat->rsvd_shift; + + v2 <<= tformat->rsvd_bits + tformat->rsvd_shift; + + return v2 | v1; + } + + return sw_tag; +} + +static inline u32 cxgbi_tag_rsvd_bits(struct cxgbi_tag_format *tformat, + u32 tag) +{ + if (cxgbi_is_ddp_tag(tformat, tag)) + return (tag >> tformat->rsvd_shift) & tformat->rsvd_mask; + + return 0; +} + +static inline u32 cxgbi_tag_nonrsvd_bits(struct cxgbi_tag_format *tformat, + u32 tag) +{ + unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1; + u32 v1, v2; + + if (cxgbi_is_ddp_tag(tformat, tag)) { + v1 = tag & ((1 << tformat->rsvd_shift) - 1); + v2 = (tag >> (shift + 1)) << tformat->rsvd_shift; + } else { + u32 mask = (1 << shift) - 1; + tag &= ~(1 << shift); + v1 = tag & mask; + v2 = (tag >> 1) & ~mask; + } + return v1 | v2; +} + +static inline void *cxgbi_alloc_big_mem(unsigned int size, + gfp_t gfp) +{ + void *p = kmalloc(size, gfp); + if (!p) + p = vmalloc(size); + if (p) + memset(p, 0, size); + return p; +} + +static inline void cxgbi_free_big_mem(void *addr) +{ + if (is_vmalloc_addr(addr)) + vfree(addr); + else + kfree(addr); +} + +static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr) +{ + if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET) + chba->ipv4addr = ipaddr; + else + pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n", + chba->ndev->name); +} + +static inline __be32 cxgbi_get_iscsi_ipv4(struct cxgbi_hba *chba) +{ + return chba->ipv4addr; +} + +struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int); +void cxgbi_device_unregister(struct cxgbi_device *); +void cxgbi_device_unregister_all(unsigned int flag); +struct cxgbi_device *cxgbi_device_find_by_lldev(void *); +int cxgbi_hbas_add(struct cxgbi_device *, unsigned int, unsigned int, + struct scsi_host_template *, + struct scsi_transport_template *); +void cxgbi_hbas_remove(struct cxgbi_device *); + +int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base, + unsigned int max_conn); +void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev); + +void cxgbi_conn_tx_open(struct cxgbi_sock *); +void cxgbi_conn_pdu_ready(struct cxgbi_sock *); +int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8); +int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int); +int cxgbi_conn_xmit_pdu(struct iscsi_task *); + +void cxgbi_cleanup_task(struct iscsi_task *task); + +void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *); +int cxgbi_set_conn_param(struct iscsi_cls_conn *, + enum iscsi_param, char *, int); +int cxgbi_get_conn_param(struct iscsi_cls_conn *, enum iscsi_param, char *); +struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32); +int cxgbi_bind_conn(struct iscsi_cls_session *, + struct iscsi_cls_conn *, u64, int); +void cxgbi_destroy_session(struct iscsi_cls_session *); +struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *, + u16, u16, u32); +int cxgbi_set_host_param(struct Scsi_Host *, + enum iscsi_host_param, char *, int); +int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *); +struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *, + struct sockaddr *, int); +int cxgbi_ep_poll(struct iscsi_endpoint *, int); +void cxgbi_ep_disconnect(struct iscsi_endpoint *); + +int cxgbi_iscsi_init(struct iscsi_transport *, + struct scsi_transport_template **); +void cxgbi_iscsi_cleanup(struct iscsi_transport *, + struct scsi_transport_template **); +void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *); +int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int, + unsigned int, unsigned int); +int cxgbi_ddp_cleanup(struct cxgbi_device *); +void cxgbi_ddp_page_size_factor(int *); +void cxgbi_ddp_ppod_clear(struct cxgbi_pagepod *); +void cxgbi_ddp_ppod_set(struct cxgbi_pagepod *, struct cxgbi_pagepod_hdr *, + struct cxgbi_gather_list *, unsigned int); +#endif /*__LIBCXGBI_H__*/ |